Reaction to his ringing endorsement of her Monday (July 25) will be the undercurrent to watch going into Day 2 of the Democratic National Convention in Philadelphia. Whether the band of Merry Men (and Women) in their green pointed hats will continue to roil the convention floor over the DNC's hidden-hand support for Clinton during the primary remains to be seen.

Unity this year is a rare commodity for any political party.

Tuesday is the Democratic delegates' roll call vote, which for the Republicans became a fracas when Donald Trump dissenters staged a last-ditch protest against the eventual nominee.

AND THE THEME IS ...

A LIFETIME OF FIGHTING FOR CHILDREN AND FAMILIES

As Monday's theme of "United Together" was redundant in its wording, Day 2's theme has already been running through most of the convention speeches. More than a few speakers Monday pointed to Clinton's decades in public service and more than a few mothers and children addressed the crowds with their stories of travail.

That will continue.

WHO'S SPEAKING

No Democratic National Convention in the past quarter century has been complete without Bill Clinton taking the stage. Far be it for the 2016 DNC to buck tradition, especially considering who won the nomination this time around.

Leading up to his headlining, the other speakers include:

Jelani Freeman, a lawyer, former Clinton Senate intern and foster care child working with at-risk kids.

Thaddeus Desmond, a Philadelphia social worker

Dynah Haubert, a disability rights lawyer

Kate Burdick, an attorney with the Juvenile Law Center in Philadelphia.

Anton Moore, an anti-gun violence advocate

Dustin Parsons, a fifth-grade teacher from Arkansas

Students from Eagle Academy in New York City

Joe Sweeney, a New York City detective who responded to the terror attacks of Sept. 11, 2001

Lauren Manning, a former executive Cantor Fitzgerald and 9/11 survivor

Ryan Moore, a health care reform advocate from Nebraska

WHERE TO WATCH

The convention gavels in at 4:30 p.m. Eastern Time (3:30 p.m. Central Time).

CNN, C-SPAN and FOX News will offer full coverage of the convention. NBC and ABC plan to devote their 10 p.m. ET broadcasts to election coverage. In a deal with CBS, Twitter will live-stream the convention.